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12201777120 = 25351337411289
BaseRepresentation
bin10110101110100100…
…00101011111100000
31011111100210111112010
423113102011133200
5144442123331440
65334434232520
7611241252141
oct132722053740
934440714463
1012201777120
1151a1648825
122446425740
1311c5bc1980
1483a743ac8
154b632b580
hex2d74857e0

12201777120 has 384 divisors, whose sum is σ = 43581525120. Its totient is φ = 2848849920.

The previous prime is 12201777109. The next prime is 12201777151. The reversal of 12201777120 is 2177710221.

12201777120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9465436 + ... + 9466724.

It is an arithmetic number, because the mean of its divisors is an integer number (113493555).

Almost surely, 212201777120 is an apocalyptic number.

12201777120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12201777120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21790762560).

12201777120 is an abundant number, since it is smaller than the sum of its proper divisors (31379748000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12201777120 is a wasteful number, since it uses less digits than its factorization.

12201777120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398 (or 1390 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 30.

The spelling of 12201777120 in words is "twelve billion, two hundred one million, seven hundred seventy-seven thousand, one hundred twenty".